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Laboratory Microprobe X-Ray Fluorescence in Plant Science: Emerging Applications and Case Studies
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Laboratory Microprobe X-Ray Fluorescence in Plant Science: Emerging Applications and Case Studies
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Journal Article
Laboratory Microprobe X-Ray Fluorescence in Plant Science: Emerging Applications and Case Studies
2018
Overview
and micro chemical analytical methods have the potential to improve our understanding of plant metabolism and development. Benchtop microprobe X-ray fluorescence spectroscopy (μ-XRF) presents a huge potential for facing this challenge. Excitation beams of 30 μm and 1 mm in diameter were employed to address questions in seed technology, phytopathology, plant physiology, and bioremediation. Different elements were analyzed in several situations of agronomic interest: (i) Examples of μ-XRF yielding quantitative maps that reveal the spatial distribution of zinc in common beans (
) primed seeds. (ii) Chemical images daily recorded at a soybean leaf (
) infected by anthracnose showed that phosphorus, sulfur, and calcium trended to concentrate in the disease spot. (iii)
measurements at the stem of
showed that under root exposure, manganese is absorbed and transported nearly 10-fold faster than iron. (iv) Quantitative maps showed that the lead distribution in a leaf of
hybrid was not homogenous, this element accumulated mainly in the leaf border and midrib, the lead hotspots reached up to 13,400 mg lead kg
fresh tissue weight. These case studies highlight the ability of μ-XRF in performing qualitative and quantitative elemental analysis of fresh and living plant tissues. Thus, it can probe dynamic biological phenomena non-destructively and in real time.
Publisher
Frontiers Media SA,Frontiers Media S.A
Subject
